Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Net income (loss)	$ 72,584	$ 11,667	$ (40,637)
Other Comprehensive Income (Loss)
Change in unrealized gain (loss) on available-for-sale securities, net of tax	217	(149)	41
Change in accumulated translation adjustments	(1,152)	(3,775)	(4,940)
Other comprehensive loss	(2,203)	(7,458)	(6,894)
Total comprehensive income (loss)	70,381	4,209	(47,531)
Cash Flow Hedging | Foreign Exchange Forward
Other Comprehensive Income (Loss)
Change in unrealized gain (loss) on foreign currency forward contracts, net of tax and change in unrealized gain (loss) on forward starting interest rate swaps, net of tax	(823)	(95)	114
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap
Other Comprehensive Income (Loss)
Change in unrealized gain (loss) on foreign currency forward contracts, net of tax and change in unrealized gain (loss) on forward starting interest rate swaps, net of tax	$ (445)	$ (3,439)	$ (2,109)